Failure Scan Option feature implemented

Failure Scan Option feature will identify the information about
all the non scanned old builds of a project and provide scan
options whenever needed.

Change-Id: I31cbc7cf670f6d7ee8ac56790d6e68a4bfb75d49
Scan/Rescan all the builds

Implemented BFA Scan/Rescan all the builds option.

Change-Id: I0ea12bfcd539cf33599b54355d45729c68dbd377
Loading statistics from KnowledgeBase

Added support for loading statistics from KnowledgeBase.
It is currently only implemented for MongoDB.

Also created Utility class for getting Jenkins master name.

Change-Id: I2af0c2a809cdd0b757a68b9a931aee809f0b455c
Updated version of Java Driver for MongoDb

Updated version to 2.11.2, which adds support
for the Mongo Aggregation Framework.

Change-Id: Iccb764b1ae529255b4fbe439103be35d6c63e66d